Chuck key holder



FIG. 1 is an exploded, front perspective view of a chuck key holder embodying my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a front elevational view thereof, the rear being a mirror image;

FIG. 4 is an end elevational view thereof, the opposite end being a mirror image;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a chuck key holder, as shown and described. 